Napa -- An American Canyon woman was reported in critical condition in Queen of the Valley Hospital in Napa after apparently falling asleep at the wheel.

Napa County Sheriff's Sergenat Gene Lyerla said 35-year-old Maryu De Guzman was injured at about 8:10 a.m., yesterday on southbound state Highway 29 just inside American Canyon city limits when she started to fall asleep while driving her Ford Explorer. The vehicle left the roadway and smashed into an earthen berm, trapping her inside.

Rescuers had a difficult time extricating the woman from the vehicle, which officials say was destroyed in the accident.